feat(avatar): add modal activity suport for avatar upload
feat(avatar): add initial support for image preview/capture
feat(avatar): add jcrop into upload popup
feat(avatar): add ng-file-upload with drag&drop support
feat(avatar): initial styling for upload modal
refactor(avatar): put upload methods into view
feat(avatar): add crop preview
fix(avatar): make it beta
fix(users): update css action buttons on user screen

sd-214
feat(core): Raven integration implemented.

SD-74: Implement sentry to inform us if users are experiencing errors
fix(core): Fixed Raven initialization.

SD-74: Implement sentry to inform us if users are experiencing errors
feat(build): tag css/js files with md5 content hash